Pump



FIG. 1 is a top perspective view of a pump according to a first embodiment, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a top perspective view of a pump according to a second embodiment, showing our new design;

FIG. 9 is a top view thereof;

FIG. 10 is a bottom view thereof;

FIG. 11 is a front view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a left side view thereof;

FIG. 15 is a top perspective view of a pump according to a third embodiment, showing our new design;

FIG. 16 is a top view thereof;

FIG. 17 is a bottom view thereof;

FIG. 18 is a front view thereof;

FIG. 19 is a right side view thereof;

FIG. 20 is a rear view thereof; and,

FIG. 21 is a left side view thereof.

Portions of the pump are shown in broken lines, which form no part of the claimed design. 

CLAIM The ornamental design for a pump, as shown and described. 